Hao;5068828; said:
I wouldn't recommend putting small Arowanas with other tankmates especially cichlids, until its around 6"+. Small Arowanas are quite defenseless. Your cichlids would most likely destroy a 2" Silver Arowana.
x2
Don't risk it.
Cheesetian;5069566; said:
I have my 2.5" piece in a 15g with three 2" Pacus and three 4.5" Albino Senegals. No problem at all.
I lost a 6" Endli and a 2.5 inch Convict when the Endli hunted it down and tried to swallow it.
I lost another 7" GT when my 16" Endli caught it. Luckily (for the Endli), I could get the dead GT out before the Endli tried to swallow it.
Albino Senegals might be a little less aggressive, but I would still not recommend this combination.
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Bottom-line, it is not advisable to keep Aros under 6-8 inches with any tank-mates (besides mollies, guppies i.e. feeders.).
Aggressive fish like Cichlids are definitely a bad idea.
Once you Aro is larger (which will be in the next 6 months), you can take a little more risk. But not now.
(My 2FT Silver Aro is in a 200G with Oscars, Jags, GTs, FL Gars and Endli. This combination is also not very "advisable". But as the fish are large, the risk is significantly less.)
Good luck,